William Loos, Curator of the Rare Books Room at the Buffalo and Erie County Public Library, will give "An Illustrated Talk on How Huckleberry Finn Came to New York State."  Mr. Loos and his library were recently in the news when the Buffalo Library was the high bidder for a much sought after lengthy letter from Mark Twain to a Buffalo lawyer about the composition of Twain's great American novel.  The letter will be added to an outstanding collection and exhibit of materials bearing on the manuscript belonging to the library.